Image source, Rex Features

Worcestershire have made a promising start, with 15 runs coming from the third over bowled by Craig Miles.

Brett D'Oliveira cracks the first two deliveries of the over for four, first through point and then through the covers.

After a single, Riki Wessels guides one to third man for another four.

He finishes the over with two runs down to deep mid-wicket.

Wessels is 19 not out.

You can listen to live commentary of this match courtesy of BBC Radio Hereford and Worcester.

Simply click on the relevant play icon above.

Riki Wessels and Brett D'Oliveira are in the middle and opening the batting for the hosts.

Left-arm spinner Jacob Bethell, just 17 years old, will bowl the first over for the Bears.

Ryan Higgins does the job for the hosts, going for just six runs from his final over to give Gloucestershire victory.

Middlesex batsman Max Holden ends unbeaten on 50, but their loss of both openers in the first four overs eventually cost them.

Victory moves Gloucestershire up to second in the South Group, and puts them on 14 points.

There's a local derby at New Road, with both teams chasing a quarter-final spot and separated by one point in the North Group.

The form table shows a disparity, with Worcestershire having won three of their past four and Birmingham Bears suffering four defeats in five.

Worcestershire won the toss and have decided to bat, with an unchanged side from their victory over Derbyshire.

That one gets under way at 17:30 BST.

After a couple of big hits, Middlesex need 17 runs from their final over to beat Gloucestershire.

Max Holden is 46 not out, with Blake Cullen unbeaten on 19.

Ryan Higgins is the man entrusted with the final over by Glos captain Jack Taylor.

Victory is perhaps not outside the realms of possibility...

It's another packed round of T20 Blast action, with sides vying for quarter-final qualification, and we've updates on eight matches to bring you this evening.

The games got under way earlier, with Gloucestershire hosting Middlesex.

Gloucestershire posted 171-8 from their 20 overs, with Ryan Higgins top-scoring with 43.

Middlesex look to be falling short in their run-chase, with Benny Howell's 3-23 hampered their momentum in the middle overs.

A broken stump delayed proceedings slightly, and a short time ago the north Londoners required 37 runs from 14 balls to win - but with just two wickets remaining.

Max Holden, unbeaten on 40 from 26 deliveries, carries their hopes.